[Wayland-bugs] [Bug 106323] ALPS SS5 (SS4 v2) trackpoint too fast / jumpy because of readout "hole" in the center

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106323

--- Comment #14 from Martin Wilck <mwilck at suse.de> ---
Created attachment 139593
  --> https://bugs.freedesktop.org/attachment.cgi?id=139593&action=edit
[PATCH] libinput-measure-trackpoint-range: minimum delta

Here's a suggested patch that makes libinput-measure-trackpoint-range better
suited for sticks with the characterics of ALPS. It works quite well for me, it
comes up with a suggestion of ~150 for the trackpoint range.

Here I assumed that a minimum corrected delta ~ 1 is "precise enough". That may
not be true. Subjectively, for me, a range value of 200 or higher works even
better for small movements, so the suggestion might actually be corrected so
that subpixel movements would be possible. But I'll leave these subtleties to
you, as you've much more expertise in the area than myself.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/wayland-bugs/attachments/20180516/d4bda9f1/attachment.html>